/*
 * Package il.ac.biu.cs.grossmm.impl.activeData
 * File SqlNodeBase.java
 * 
 * This is a part of presence service framework prototype. 
 * See javadoc for more information.
 *  
 * Copyright (C) 2006 Grossmann Mark
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package il.ac.biu.cs.grossmm.impl.activeData;

import il.ac.biu.cs.grossmm.api.data.Node;
import il.ac.biu.cs.grossmm.api.data.NodeType;

public abstract class SqlNodeBase<N> implements Node<N> {
	/**
	 * Sql mapping which defines type of the node as well as its mapping to a
	 * set of relational tables
	 */
	final SqlMapping mapping;

	/**
	 * Node unique identifier
	 */
	final int id;

	public SqlNodeBase(SqlMapping mapping, int id) {
		this.mapping = mapping;
		this.id = id;
	}

	public abstract SqlSynch getSynch();

	public int getId() {
		return id;
	}

	public abstract <P> SqlNodeBase<P> getParent();

	public abstract SqlRootNode getRoot();

	@Override
	public boolean equals(Object obj) {
		if (obj instanceof SqlInnerNode) {
			SqlInnerNode n = (SqlInnerNode) obj;
			return mapping.equals(n.mapping) && id == n.id;
		}

		return false;
	}

	@Override
	public int hashCode() {
		return mapping.hashCode() ^ id;
	}

	public NodeType<N> getNodeType() {
		return mapping.nodeType;
	}
}
